CHD (Compressed Hunks of Data) format has become the gold standard for preserving PlayStation 2 libraries. Originally developed for the MAME project, this format offers a sophisticated balance between high-level compression and perfect data integrity. 💿 Why CHD is the Superior Format
Before understanding the "exclusive" aspect, you must understand the format war.
The term "exclusive" in relation to PS2 CHD ROMs does not refer to unique game titles, but rather to the exclusive benefits of the format regarding storage efficiency and data integrity.
The king of PS2 emulation has native CHD support as of the Qt builds (v1.7+). Simply go to CDVD > Iso Selector and browse to your .chd file. It works flawlessly with save states and widescreen patches.